Wow, even though you marked the gear you have NO clue as to what position the injector pump was in in relation to the rest of your engine.
You can start with finding your timing marks on the crankshaft,the timing on the Y385 engine is 16 degree BTC. ,once you locate the timing mark you will have to see what position your injector pump is at, you will have to remove the gear off the front and get it in time with the crankshaft.
Tommy
Affordable Tractor Sales
“Your Jinma Parts Superstore”
http://www.affordabletractorsalesco.com